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  Gitee镜像
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  精简启动项目[gitee]
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  精简启动项目-带权限
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  精简启动项目-带权限[gitee]
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  配套java后端
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  配套java后端[gitee]
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          附加
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  权限管理
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  代码生成
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          衍生项目
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  后台获取配置的CRUD
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          友情链接
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  Github加速工具
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  演示
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    GitHub
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  D2-CRUD-X
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  Gitee镜像
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  精简启动项目-带权限[gitee]
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  配套java后端
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  配套java后端[gitee]
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></li><li class="dropdown-item"><h4>
          附加
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  权限管理
</a></li><li class="dropdown-subitem"><a href="/d2-crud-plus/guide/generate.html" class="nav-link">
  代码生成
</a></li></ul></li><li class="dropdown-item"><h4>
          衍生项目
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  后台获取配置的CRUD
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></li><li class="dropdown-item"><h4>
          友情链接
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  Github加速工具
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></li></ul></div></div><div class="nav-item"><a href="http://preview.d2-crud-plus.docmirror.cn/D2CrudPlusExample/index.html" target="_blank" rel="noopener noreferrer" class="nav-link external">
  演示
  <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></div> <a href="https://github.com/greper/d2-crud-plus" target="_blank" rel="noopener noreferrer" class="repo-link">
    GitHub
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aria-current="page" class="sidebar-link">介绍</a></li><li><a href="/d2-crud-plus/guide/quickstart.html" class="sidebar-link">快速上手</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>进阶</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/d2-crud-plus/guide/mixins.html" class="sidebar-link">核心逻辑</a></li><li><a href="/d2-crud-plus/guide/structure.html" class="sidebar-link">数据结构</a></li><li><a href="/d2-crud-plus/guide/column-type.html" class="sidebar-link">字段类型</a></li><li><a href="/d2-crud-plus/guide/types.html" class="sidebar-link">字段类型列表</a></li><li><a href="/d2-crud-plus/guide/custom-type.html" class="sidebar-link">自定义字段类型</a></li><li><a href="/d2-crud-plus/guide/component.html" class="sidebar-link">组件配置</a></li><li><a href="/d2-crud-plus/guide/slot.html" class="sidebar-link">slot自定义</a></li><li><a href="/d2-crud-plus/guide/extends.html" class="sidebar-link">自定义扩展</a></li><li><a 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class="sidebar-heading"><span>组件</span> <span class="arrow right"></span></p> <!----></section></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>附加功能</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/d2-crud-plus/guide/permission.html" class="sidebar-link">权限管理</a></li><li><a href="/d2-crud-plus/guide/generate.html" class="sidebar-link">代码生成</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>更多帮助</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/d2-crud-plus/guide/upgrade.html" class="sidebar-link">版本升级</a></li><li><a href="/d2-crud-plus/guide/breakingchange.html" class="sidebar-link">破坏性变更</a></li><li><a href="/d2-crud-plus/guide/upgradechange.html" class="sidebar-link">版本变更说明</a></li><li><a href="/d2-crud-plus/guide/questions.html" aria-current="page" class="active sidebar-link">常见问题</a></li><li><a href="/d2-crud-plus/guide/contact.html" class="sidebar-link">联系作者</a></li><li><a href="/d2-crud-plus/guide/donate.html" class="sidebar-link">捐赠</a></li><li><a href="/d2-crud-plus/guide/users.html" class="sidebar-link">他们在用</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>ChangeLog</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/d2-crud-plus/guide/changelogs/packages/d2-crud-x/CHANGELOG.html" class="sidebar-link">d2-crud-x</a></li><li><a href="/d2-crud-plus/guide/changelogs/packages/d2-crud-plus/CHANGELOG.html" class="sidebar-link">d2-crud-plus</a></li><li><a href="/d2-crud-plus/guide/changelogs/packages/d2-crud-plus-extends/CHANGELOG.html" class="sidebar-link">d2-crud-plus-extends</a></li><li><a href="/d2-crud-plus/guide/changelogs/packages/d2-crud-plus-example/CHANGELOG.html" class="sidebar-link">d2-crud-plus-example</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="常见问题"><a href="#常见问题" class="header-anchor">#</a> 常见问题</h1> <h2 id="_1-省市区选择组件value是数组-后台返回的是省市区三个字段怎么办"><a href="#_1-省市区选择组件value是数组-后台返回的是省市区三个字段怎么办" class="header-anchor">#</a> 1. 省市区选择组件value是数组，后台返回的是省市区三个字段怎么办？</h2> <p>假设后台返回的是三个字段，province、area、city</p> <div class="language-js extra-class"><pre class="language-js"><code>column<span class="token punctuation">:</span><span class="token punctuation">[</span>
  <span class="token punctuation">{</span>
    title<span class="token punctuation">:</span><span class="token string">'省市区'</span><span class="token punctuation">,</span>
    key<span class="token punctuation">:</span><span class="token string">'pac'</span><span class="token punctuation">,</span>
    type<span class="token punctuation">:</span><span class="token string">'area-selector'</span><span class="token punctuation">,</span>
    <span class="token comment">// 后端获取到数据后，将调用valueBuilder构建pac的value为area-selector组件所需要的格式</span>
    <span class="token function">valueBuilder</span><span class="token punctuation">(</span><span class="token parameter">row<span class="token punctuation">,</span> col</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
      row<span class="token punctuation">.</span>pac<span class="token operator">=</span><span class="token punctuation">[</span>row<span class="token punctuation">.</span>province<span class="token punctuation">,</span>row<span class="token punctuation">.</span>area<span class="token punctuation">,</span>row<span class="token punctuation">.</span>city<span class="token punctuation">]</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token comment">// 点击确认对话框后，将调用valueResolve解析组件的value值为后端所需要的省市区字段</span>
    <span class="token function">valueResolve</span><span class="token punctuation">(</span><span class="token parameter">form<span class="token punctuation">,</span> col</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
      <span class="token keyword">if</span><span class="token punctuation">(</span>form<span class="token punctuation">.</span>pac <span class="token operator">&amp;&amp;</span> form<span class="token punctuation">.</span>pac<span class="token punctuation">.</span>length<span class="token operator">&gt;=</span><span class="token number">2</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        form<span class="token punctuation">.</span>province <span class="token operator">=</span> form<span class="token punctuation">.</span>pac<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span>
        form<span class="token punctuation">.</span>area<span class="token operator">=</span>form<span class="token punctuation">.</span>pac<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span>
        form<span class="token punctuation">.</span>city<span class="token operator">=</span>form<span class="token punctuation">.</span>pac<span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span>
      <span class="token punctuation">}</span>
      <span class="token keyword">delete</span> form<span class="token punctuation">.</span>pac
    <span class="token punctuation">}</span> 
  <span class="token punctuation">}</span>
<span class="token punctuation">]</span>
</code></pre></div><h2 id="_2-如何在crud-js中拿到this"><a href="#_2-如何在crud-js中拿到this" class="header-anchor">#</a> 2. 如何在crud.js中拿到this？</h2> <p>修改两处地方即可</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token comment">// crud.js</span>
<span class="token keyword">export</span> <span class="token keyword">const</span> <span class="token function-variable function">crudOptions</span> <span class="token operator">=</span> <span class="token punctuation">(</span><span class="token parameter">vm</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span> <span class="token comment">//这里改成一个Function</span>
  <span class="token keyword">return</span> <span class="token punctuation">{</span>
    columns<span class="token punctuation">:</span> <span class="token punctuation">[</span>
      <span class="token punctuation">{</span>
        key<span class="token punctuation">:</span><span class="token string">'xxx'</span><span class="token punctuation">,</span>
        <span class="token function">valueBuilder</span><span class="token punctuation">(</span><span class="token parameter">row<span class="token punctuation">,</span> col</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
          <span class="token comment">// 比如这里就可以用vm.$set等方法啦</span>
        <span class="token punctuation">}</span> 
      <span class="token punctuation">}</span> 
    <span class="token punctuation">]</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><div class="language-js extra-class"><pre class="language-js"><code><span class="token comment">// index.vue</span>
<span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  <span class="token operator">...</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token function">getCrudOptions</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">return</span> <span class="token function">crudOptions</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">)</span> <span class="token comment">//这里调用这个Function，把this传进去</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><p>示例： http://preview.d2-crud-plus.docmirror.cn/D2CrudPlusExample/index.html#/demo/form/select</p> <h2 id="_3-怎么动态获取表单组件的配置"><a href="#_3-怎么动态获取表单组件的配置" class="header-anchor">#</a> 3. 怎么动态获取表单组件的配置</h2> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">let</span> template <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getEditFormTemplate</span><span class="token punctuation">(</span>columnKey<span class="token punctuation">)</span> <span class="token comment">//获取组件配置</span>
template<span class="token punctuation">.</span>component<span class="token punctuation">.</span>props<span class="token punctuation">.</span>options <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token punctuation">]</span> <span class="token comment">//动态将选项置空</span>
</code></pre></div><p>示例： http://preview.d2-crud-plus.docmirror.cn/D2CrudPlusExample/index.html#/demo/form/addi</p> <h2 id="_4-怎么获取某个字段的数据字典的选项列表"><a href="#_4-怎么获取某个字段的数据字典的选项列表" class="header-anchor">#</a> 4. 怎么获取某个字段的数据字典的选项列表？</h2> <div class="language-js extra-class"><pre class="language-js"><code><span class="token comment">// 方式1：</span>
<span class="token comment">//获取form表单组件中的字典选项列表</span>
<span class="token keyword">let</span> columnKey <span class="token operator">=</span> <span class="token string">'你的字段key'</span>
<span class="token keyword">let</span> dictData <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getEditFormTemplate</span><span class="token punctuation">(</span>columnKey<span class="token punctuation">)</span><span class="token punctuation">.</span>component<span class="token punctuation">.</span>props<span class="token punctuation">.</span>dict<span class="token punctuation">.</span>data<span class="token punctuation">;</span>

<span class="token comment">//通过字典value获取label</span>
<span class="token keyword">let</span> value <span class="token operator">=</span> <span class="token string">'某个字典项的value'</span>
<span class="token keyword">let</span> label <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getEditFormTemplate</span><span class="token punctuation">(</span>columnKey<span class="token punctuation">)</span><span class="token punctuation">.</span>component<span class="token punctuation">.</span>props<span class="token punctuation">.</span>dict<span class="token punctuation">.</span>dataMap<span class="token punctuation">[</span>value<span class="token punctuation">]</span>

<span class="token comment">//获取行展示组件中的字典选项列表</span>
<span class="token keyword">let</span> columnKey <span class="token operator">=</span> <span class="token string">'你的字段key'</span>
<span class="token keyword">let</span> dictData <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span>crud<span class="token punctuation">.</span>columnsMap<span class="token punctuation">[</span>columnKey<span class="token punctuation">]</span><span class="token punctuation">.</span>component<span class="token punctuation">.</span>props<span class="token punctuation">.</span>dict<span class="token punctuation">.</span>data<span class="token punctuation">;</span>
<span class="token comment">// 注意：以上方式在字典动态变化时可能会无效</span>

<span class="token comment">// 方式2：推荐，通过component的ref获取</span>
<span class="token function">valueChange</span><span class="token punctuation">(</span>key <span class="token punctuation">,</span>value <span class="token punctuation">,</span>form<span class="token punctuation">,</span> <span class="token punctuation">{</span>getColumn<span class="token punctuation">,</span> mode<span class="token punctuation">,</span> component<span class="token punctuation">,</span> immediate<span class="token punctuation">,</span> getComponent <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
 <span class="token keyword">const</span> data <span class="token operator">=</span> component<span class="token punctuation">.</span><span class="token function">getDictData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
 <span class="token keyword">const</span> otherColumnDictData <span class="token operator">=</span> <span class="token function">getComponent</span><span class="token punctuation">(</span><span class="token string">'otherColumnKey'</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">getDictData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
<span class="token comment">// 方式3：异步获取</span>
<span class="token keyword">const</span> dict <span class="token operator">=</span> <span class="token punctuation">{</span>url<span class="token punctuation">:</span><span class="token string">'xxx'</span><span class="token punctuation">}</span>
d2CrudPlus<span class="token punctuation">.</span>util<span class="token punctuation">.</span>dict<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>dict<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token parameter">data</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  <span class="token keyword">const</span> dictData  <span class="token operator">=</span> data
<span class="token punctuation">}</span><span class="token punctuation">)</span>


<span class="token comment">// 注意：新版本已不支持 this.crud.columnsMap[columnKey].dict 方式获取</span>
<span class="token comment">// 请使用 this.crud.columnsMap[columnKey].component.props.dict</span>
</code></pre></div><p>示例： http://preview.d2-crud-plus.docmirror.cn/D2CrudPlusExample/index.html#/demo/form/select</p> <h2 id="_5-怎么获取表单各个字段的值"><a href="#_5-怎么获取表单各个字段的值" class="header-anchor">#</a> 5. 怎么获取表单各个字段的值？</h2> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">let</span> value <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getEditForm</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>columnKey<span class="token punctuation">;</span>
</code></pre></div><h2 id="_6-操作列的按钮怎么隐藏"><a href="#_6-操作列的按钮怎么隐藏" class="header-anchor">#</a> 6. 操作列的按钮怎么隐藏？</h2> <p>隐藏按钮</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">const</span> crudOptions <span class="token operator">=</span> <span class="token punctuation">{</span>
  rowHandle<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    remove<span class="token punctuation">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    edit<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      <span class="token function">show</span><span class="token punctuation">(</span><span class="token parameter">index<span class="token punctuation">,</span>row</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token boolean">false</span>
      <span class="token punctuation">}</span>   
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><p>禁用按钮</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">const</span> crudOptions <span class="token operator">=</span> <span class="token punctuation">{</span>
  rowHandle<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    remove<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      disabled<span class="token punctuation">:</span> <span class="token boolean">true</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    edit<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      <span class="token function">disabled</span><span class="token punctuation">(</span><span class="token parameter">index<span class="token punctuation">,</span>row</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token keyword">return</span> <span class="token boolean">true</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><p>隐藏操作列</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">const</span> crudOptions <span class="token operator">=</span> <span class="token punctuation">{</span>
  rowHandle<span class="token punctuation">:</span> <span class="token boolean">false</span>
<span class="token punctuation">}</span>
</code></pre></div><h2 id="_7-怎么手动打开编辑框"><a href="#_7-怎么手动打开编辑框" class="header-anchor">#</a> 7. 怎么手动打开编辑框？</h2> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2Crud</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">showDialog</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    mode<span class="token punctuation">:</span> <span class="token string">'edit'</span><span class="token punctuation">,</span>
    rowIndex<span class="token punctuation">:</span>xxx
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre></div><p>更多<a href="https://gitee.com/greper/d2-crud-plus/blob/master/packages/d2-crud-x/src/mixin/exposeMethods.js" target="_blank" rel="noopener noreferrer">d2-crud-x外部暴露的方法<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <h2 id="_8-1-怎么将初始化从created推迟到mounted"><a href="#_8-1-怎么将初始化从created推迟到mounted" class="header-anchor">#</a> 8.1 怎么将初始化从created推迟到mounted？</h2> <p>默认<code>d2CrudPlus</code>的初始化是在<code>created</code>里面开始的。<br>
但有时候某些参数需要从<code>mounted</code>里面才能获取到<br>
这时候就需要把初始化过程后移</p> <p><code>d2CrudPlus.crud</code> mixin如下</p> <div class="language-js extra-class"><pre class="language-js"><code>curdMixin <span class="token operator">=</span><span class="token punctuation">{</span>
  <span class="token function">created</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_OnCreated</span><span class="token punctuation">(</span><span class="token punctuation">)</span>  
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token function">_OnCreated</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span><span class="token comment">//created的时候执行</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_doStart</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token function">_doStart</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">//crud的初始化方法</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">initColumns</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">doLoad</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><p>你可以在你的页面中按如下方式改写即可将初始化推迟到<code>mounted</code></p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  <span class="token function">mounted</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token comment">//mounted里面调用start</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">_doStart</span> <span class="token punctuation">(</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token function">_OnCreated</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment">//覆盖为空方法</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><h2 id="_8-2-怎么将第一次加载数据从created推迟到mounted"><a href="#_8-2-怎么将第一次加载数据从created推迟到mounted" class="header-anchor">#</a> 8.2 怎么将第一次加载数据从created推迟到mounted？</h2> <p>默认<code>d2CrudPlus</code>第一次加载数据是在<code>doLoad</code>方法中调用<code>doRefresh</code>。<br>
你可以在你的页面中按如下方式改写即可将第一次加载数据推迟到<code>mounted</code></p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  <span class="token function">mounted</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token comment">//mounted里面调用刷新方法</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">doRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token function">doLoad</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment">//覆盖为空方法</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><h2 id="_8-3-怎么一打开页面就获取el-table中的数据"><a href="#_8-3-怎么一打开页面就获取el-table中的数据" class="header-anchor">#</a> 8.3 怎么一打开页面就获取el-table中的数据？</h2> <p>通过<code>this.getD2CrudTableData()</code>即可获取<code>el-table</code>中的数据<br>
但是由于从后端请求数据是异步的，直接在<code>created</code>或者<code>mounted</code>里面去调用的话<br> <code>el-table</code>可能还没有初始化完成或者数据还未加载完成<br>
所以需要先将加载数据推迟到<code>mounted</code><br>
然后在获取数据成功后的<code>nextTick</code>中获取<code>data</code></p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  <span class="token function">mounted</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span> <span class="token comment">//mounted里面调用刷新方法</span>
    <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">doRefresh</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token function">doLoad</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token comment">//覆盖为空方法</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token keyword">async</span> <span class="token function">pageRequest</span> <span class="token punctuation">(</span><span class="token parameter">query</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">const</span> ret <span class="token operator">=</span> <span class="token keyword">await</span>  <span class="token function">GetList</span><span class="token punctuation">(</span>query<span class="token punctuation">)</span>
      <span class="token comment">// 需要等待2次nextTick el-table才能最终完成初始化，此时才能正确获取到data</span>
      <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$nextTick</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token keyword">async</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
        <span class="token keyword">await</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$nextTick</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        <span class="token keyword">const</span> tableData <span class="token operator">=</span> <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2CrudTableData</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        console<span class="token punctuation">.</span><span class="token function">log</span><span class="token punctuation">(</span><span class="token string">'tableData:'</span><span class="token punctuation">,</span> tableData<span class="token punctuation">)</span>
      <span class="token punctuation">}</span><span class="token punctuation">)</span>
      <span class="token keyword">return</span> ret
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><h2 id="_9-表格错位怎么办"><a href="#_9-表格错位怎么办" class="header-anchor">#</a> 9. 表格错位怎么办</h2> <p>有两种可能：
1、所有列都设置了宽度，并且总的宽度不够占满一行，就会产生操作列错位，请至少保留一列为自动宽度(建议设置minWidth)
2、动态显隐列或者有表尾合计行时，有可能产生错位，可以按如下方法解决
在合适的时机调用如下代码</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token comment">// 使用setTimeout 验证是否能够起作用</span>
<span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
   <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2CrudTable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">doLayout</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span><span class="token punctuation">)</span>
<span class="token comment">// 或者</span>
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$nextTick</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2CrudTable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">doLayout</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre></div><p>如果还不行可以试试下面这个</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token comment">// 使用setTimeout 验证是否能够起作用</span>
<span class="token function">setTimeout</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
  <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2CrudTable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>store<span class="token punctuation">.</span><span class="token function">scheduleLayout</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span><span class="token punctuation">)</span>

<span class="token comment">// 或者</span>
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$nextTick</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
 <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2CrudTable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>store<span class="token punctuation">.</span><span class="token function">scheduleLayout</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span>
</code></pre></div><p>例如：</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">export</span> <span class="token keyword">default</span> <span class="token punctuation">{</span>
  methods<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token keyword">async</span> <span class="token function">pageRequest</span> <span class="token punctuation">(</span><span class="token parameter">query</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
      <span class="token keyword">const</span> ret <span class="token operator">=</span> <span class="token keyword">await</span>  <span class="token function">GetList</span><span class="token punctuation">(</span>query<span class="token punctuation">)</span>
        <span class="token comment">// 请至少保证有一列没有设置固定宽度，否则也会有错位问题</span>
        <span class="token comment">// 修复合计行错位问题</span>
        <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">$nextTick</span><span class="token punctuation">(</span><span class="token keyword">async</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span> <span class="token comment">// 这里要异步执行</span>
            <span class="token comment">// await this.$nextTick() //如果一次nextTick不行，那就两次</span>
            <span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">getD2CrudTable</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span>store<span class="token punctuation">.</span><span class="token function">scheduleLayout</span><span class="token punctuation">(</span><span class="token punctuation">)</span>
        <span class="token punctuation">}</span><span class="token punctuation">)</span> <span class="token comment">// 等待加载完成后触发重排布局</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre></div><p><a href="http://preview.d2-crud-plus.docmirror.cn/D2CrudPlusExample/index.html#/demo/form/column" target="_blank" rel="noopener noreferrer">错位解决方案演示<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>
看下方合计行</p> <h2 id="_10-怎么给select设置默认选中第一个选项"><a href="#_10-怎么给select设置默认选中第一个选项" class="header-anchor">#</a> 10. 怎么给select设置默认选中第一个选项？</h2> <div class="language-js extra-class"><pre class="language-js"><code>form<span class="token punctuation">:</span><span class="token punctuation">{</span>
  component<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    props<span class="token punctuation">:</span> <span class="token punctuation">{</span>
      <span class="token comment">//字典加载完成后触发</span>
      <span class="token function">onReady</span> <span class="token punctuation">(</span><span class="token parameter"><span class="token punctuation">{</span> component<span class="token punctuation">,</span> data <span class="token punctuation">}</span></span><span class="token punctuation">)</span> <span class="token punctuation">{</span> <span class="token comment">//component为dict-select组件ref， data为字典选项数组</span>
        <span class="token keyword">if</span> <span class="token punctuation">(</span>component<span class="token punctuation">.</span>value <span class="token operator">==</span> <span class="token keyword">null</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
          component<span class="token punctuation">.</span><span class="token function">onInput</span><span class="token punctuation">(</span>data<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">.</span>value<span class="token punctuation">)</span> <span class="token comment">//这里触发选中事件</span>
        <span class="token punctuation">}</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

</code></pre></div><h2 id="_11-表格滚动条美化"><a href="#_11-表格滚动条美化" class="header-anchor">#</a> 11. 表格滚动条美化</h2> <p>引入css <code>/d2-crud-plus-example/src/business/style/scroll.scss</code></p> <h2 id="_12-ie11打不开"><a href="#_12-ie11打不开" class="header-anchor">#</a> 12. IE11打不开</h2> <p>请尝试在你项目的vue.config.js中配置：</p> <div class="language-js extra-class"><pre class="language-js"><code>module<span class="token punctuation">.</span>exports <span class="token operator">=</span> <span class="token punctuation">{</span>
  <span class="token comment">// 解决ie打不开的问题</span>
  transpileDependencies<span class="token punctuation">:</span> <span class="token punctuation">[</span><span class="token string">'d2p-extends'</span><span class="token punctuation">]</span>
<span class="token punctuation">}</span>

</code></pre></div><h2 id="_13-动态列显隐"><a href="#_13-动态列显隐" class="header-anchor">#</a> 13. 动态列显隐</h2> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">this</span><span class="token punctuation">.</span>crud<span class="token punctuation">.</span>columnsMap<span class="token punctuation">.</span>xxxx<span class="token punctuation">.</span>show <span class="token operator">=</span><span class="token boolean">false</span>
<span class="token keyword">this</span><span class="token punctuation">.</span><span class="token function">handleColumnsFilterChanged</span><span class="token punctuation">(</span><span class="token keyword">this</span><span class="token punctuation">.</span>crud<span class="token punctuation">.</span>columns<span class="token punctuation">)</span>
</code></pre></div><h2 id="_14-文件还没上传完-用户就点击提交-获取不到这个上传文件值怎么办"><a href="#_14-文件还没上传完-用户就点击提交-获取不到这个上传文件值怎么办" class="header-anchor">#</a> 14. 文件还没上传完，用户就点击提交，获取不到这个上传文件值怎么办</h2> <p>需要设置自定义校验</p> <div class="language-js extra-class"><pre class="language-js"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> D2pFileUploader <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">'d2p-extends'</span>
<span class="token comment">//给文件上传组件配置如下校验规则即可</span>
form<span class="token punctuation">:</span><span class="token punctuation">{</span> 
    rules<span class="token punctuation">:</span> <span class="token punctuation">[</span><span class="token punctuation">{</span> <span class="token comment">// 当有文件还未上传完成时，阻止表单提交，等待全部上传完成，才允许提交</span>
        validator<span class="token punctuation">:</span> D2pFileUploader<span class="token punctuation">.</span><span class="token function">createAllUploadedValidator</span><span class="token punctuation">(</span>vm<span class="token punctuation">.</span>getFormComponentRef<span class="token punctuation">)</span><span class="token punctuation">,</span>
        message<span class="token punctuation">:</span> <span class="token string">'还有文件正在上传，请等待上传完成，或删除它'</span>
    <span class="token punctuation">}</span><span class="token punctuation">]</span>
<span class="token punctuation">}</span>

</code></pre></div><h2 id="_15-切换页面tab页签时如何设置不刷新页面-页面缓存"><a href="#_15-切换页面tab页签时如何设置不刷新页面-页面缓存" class="header-anchor">#</a> 15. 切换页面tab页签时如何设置不刷新页面（页面缓存）</h2> <p>router的name和页面组件的name保持一致，然后设置router的meta.cache=true</p></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/greper/d2-crud-plus/edit/master//docs/guide/questions.md" target="_blank" rel="noopener noreferrer">在 GitHub 上编辑此页</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">上次更新:</span> <span class="time">2021/5/6 上午9:18:35</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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